tc-99m pertechnetate scintigraphy is the modality of choice for diagnosis of meckel's diverticulum. interpretation of meckel's scan identifies a focal area of radiopharmaceutical uptake in the anterior abdomen similar to normal gastric mucosa. the activity must be of the same pattern and intensity as gastric uptake. we present a 13-year-old patient with gastrointestinal bleeding and a...

introduction: radioisotope scanning is the best method for objective assessment of salivary gland function. thus, it was used in a randomized trial of concomitant pilocarpine for assessment of radiation-induced xerostomia, in addition to subjective evaluation by an approved questionnaire and objective standard xerostomia grading. methods: patients randomized in placebo-controlled trial of piloc...

Two patients with Herpesvirus hominis (herpes simplex) encephalitis were investigated by serial isotope encephalograms using technetium-99m pertechnetate. In the first case the diagnosis was made by brain biopsy, and by successful tissue culture, and was confirmed by a significant rise in antibody titre, but in the second the laboratory evidence was exclusively serological. Necrotizing encephal...

Meckel's diverticulum (MD) is estimated to affect 1%-2% of the general population, and it represents a clinically silent finding of a congenital anomaly in up to 85% of the cases. In adults, MD may cause symptoms, such as overt occult lower gastrointestinal bleeding. The diagnostic imaging workup includes computed tomography scan, magnetic resonance imaging enterography, technetium 99m scintigr...

I would like to comment that parathyroid scanning is performed with a lipophilic cationic complex of Tc, called sestamibi, and not free technetium pertechnetate, as is described in the article. According to the guidelines, dual phase Tc-sestamibi scans are commonly used for preoperative localization of parathyroid adenomas. Hyperactive parathyroid cells have a high concentration of sestamibi an...